کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
650697 1457304 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A note on vortex breakdown incipience and Long’s jet
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
A note on vortex breakdown incipience and Long’s jet
چکیده انگلیسی

An extension of Long’s jet model is presented. This is formulated from the modified set of quasi-cylindrical (QC) equations proposed by Berger and Erlebacher (1995) [8] from an order-of-magnitude balance of the equations of motion near the vortex core breakdown. The new set of equations reveals the key role of the radial viscous term of the radial momentum equation around the vortex breakdown fold. So retaining this term, the third branch (solutions of Type III), corresponding to the full Navier–Stokes equations, and not observed by the slender Long’s model, could be obtained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - B/Fluids - Volume 29, Issue 4, July–August 2010, Pages 247–250
نویسندگان
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